One way to solve the problem of the discontinuance of old and new irises that you think are superior, but that seem to be under-distributed, is to provide them free or in trade to other members when you divide a clump.
Ghio had long discontinued his "Bubbling Over" and when I recognized that it was a vigorous, floriferous, bubbly, fragrant, survivor of total neglect, heat humidity, rot and borers, I made sure that about 6 people who wanted it, got it by mail. Everyone involved were pleased to reimburse me for postage, and did, quite promptly. The rest of the rhizomes I either replanted or took to our local society sale. I feel glad that it is now distributed a bit more widely, and hope that those who received it will do the same in turn.
I seem to recall that Joe Ghio is in his 80s so it's quite understandable that he is cutting back. From what I see in Brad's seedlings, I look to Brad to take up the torch for Joe, as Joe gradually retires. I'm sure Joe sees and appreciates Brad's continuance of his beautiful ruffled forms. I would think it would be gratifying to see one's life endeavors continued.